CN108865280B

CN108865280B - Crop straw gasification furnace

Info

Publication number: CN108865280B
Application number: CN201810784338.9A
Authority: CN
Inventors: 邢箫
Original assignee: Xuancheng Huake Ceramsite Co Ltd
Current assignee: Xuancheng Huake ceramsite Technology Co.,Ltd.
Priority date: 2018-07-17
Filing date: 2018-07-17
Publication date: 2020-12-08
Anticipated expiration: 2038-07-17
Also published as: CN108865280A

Abstract

The invention belongs to the technical field of fuel gas manufacturing equipment, and particularly relates to a crop straw gasification furnace, which comprises a furnace body and a rotating shaft; the device also comprises a reaction unit; the rotary shaft is arranged in the furnace body and is a hollow shaft, the bottom end of the rotary shaft is fixedly connected with the reaction unit, and a feeding hole is formed in the outer ring of the rotary shaft extending out of the furnace body. Through driving pivot anticlockwise rotation for crop straw carries out abundant burning with the air, when treating the air in the reaction box and reducing, through driving the reaction box clockwise turning, the baffle is lived the hole shutoff of reaction box one side, make the air can not enter into the reaction box, crop straw smolders in the reaction box, produce the gas and make the long-time energy supply that lasts of crop straw, thereby the energy supply effect of crop straw gasification furnace has been improved.

Description

Crop straw gasification furnace

Technical Field

The invention belongs to the technical field of fuel gas manufacturing equipment, and particularly relates to a crop straw gasification furnace.

Background

At present, the updraft type gasification furnace in the prior art has simple structure, low manufacturing cost and wide straw resource, and also has the problems of global attention on energy crisis and air pollution caused by agricultural wastes such as seasonal straw burning and the like, so that the development and utilization of renewable energy are greatly emphasized in the party and the country, the energy conservation of the straw is encouraged and advocated, and the energy conservation and the environmental protection are realized in an effort. However, because the gasification furnace in the prior art has high requirement on the dryness of the straws, the gasification furnace often takes off materials and extinguishes due to incapability of mastering the feeding time in use, and due to the blockage of pipelines caused by unclear tar treatment, the gasification furnace often has fire cutoff due to overhead inside the furnace and other factors, so that the popularization and the application of the gasification furnace are limited.

The prior art also discloses some technical schemes of crop straw gasification furnaces, such as a Chinese patent with application number 200810210412, which comprises a furnace body, an exhaust valve, an annular water tank and a purifier, wherein the furnace body is provided with a material-removing detection prompt and moisture-removing furnace cover system, which comprises a material pressing block with a guide post, a prompt device provided with a magnetic field control switch and a moisture-removing furnace cover part provided with a guide sleeve, when the material pressing block naturally presses light gas-producing fluffy fuel in the furnace by utilizing the uniform self-weight, the density of the light gas-producing fluffy fuel is increased in real time, the timely blanking is also promoted, the effect is improved, along with the consumption of the fuel, the part provided with a magnet block at the top end of the guide post connected with the material pressing block triggers the prompt device outside the guide sleeve when the part falls to a set position, namely, the prompt for material feeding or set voice is automatically sent, and the moisture-removing furnace cover is in, the periphery of the bottom of the furnace body is inserted into an annular water tank arranged at the upper opening of the furnace body.

According to the technical scheme, the straw gasification furnace is provided with the automatic anti-flameout air inlet system, so that comprehensive and balanced combustion in the furnace chamber is guaranteed, the furnace chamber is not prone to burn and empty, coke to be formed can be broken in time, continuous gas production is guaranteed, and the effect of never flameout is achieved. However, the scheme can not effectively burn the crop straws according to the conditions in the furnace body, and simultaneously, plant ash and dust generated in the burning of the crop straws can not be effectively treated; thereby limiting the technical solution.

Disclosure of Invention

In order to make up for the defects of the prior art, the crop straw gasification furnace provided by the invention has the advantages that the crop straw and air are sufficiently combusted by driving the rotating shaft to rotate anticlockwise, when the air in the reaction box is reduced, the reaction box is driven to rotate clockwise, the baffle plate blocks the first hole on one side of the reaction box, so that the air cannot enter the reaction box, the crop straw is smoldered in the reaction box, fuel gas is generated to continuously supply energy to the crop straw for a long time, and the energy supply effect of the crop straw gasification furnace is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a crop straw gasification furnace, which comprises a furnace body and a rotating shaft; the device also comprises a reaction unit; the rotating shaft is arranged in the furnace body, the rotating shaft is a hollow shaft, the bottom end of the rotating shaft is fixedly connected with the reaction unit, the top end of the rotating shaft extends out of the furnace body and is fixedly connected with the driving device, and a feeding port is arranged on the outer ring of the rotating shaft extending out of the furnace body; the number of the reaction units is four, the reaction units are fixedly connected to the outer ring of the rotating shaft, and the reaction units are circumferentially distributed around the rotating shaft; the side wall of the furnace body is provided with an air inlet, a first ash outlet and a second ash outlet; the gas inlet is communicated with the reaction unit; wherein the content of the first and second substances,

the reaction unit comprises a reaction box and a baffle plate; the lateral wall of reaction box is equipped with the hole No. one, and the bottom of reaction box is equipped with the hole No. two, and reaction box one side links firmly through the spring and is equipped with the baffle. During operation, in sending into the reaction box with crop straw from the pay-off mouth, get into many air from the air inlet in the reaction box at first, this moment, drive pivot anticlockwise rotation through drive arrangement, the baffle does not block up a hole, make crop straw and air carry out abundant burning, treat that the air in the reaction box diminishes, drive pivot clockwise rotation through drive arrangement, corresponding reaction box also clockwise rotation, the reaction box is in the rotation, the baffle is blocked up a hole of reaction box one side, make the air can not get into in the reaction box, crop straw smolders in the reaction box this moment, produce the gas and make the long-time continuous energy supply of crop straw, thereby the energy supply effect of crop straw gasification furnace has been improved.

Preferably, the bottom of the reaction box is provided with a sleeve; a sliding groove is formed in the sleeve, one end of the sleeve is positioned inside the reaction box, and the other end of the sleeve is positioned outside the reaction box; the sliding groove is internally provided with a guide block, and one side of the guide block, which is close to the rotating shaft, is conical. During operation, when sending into the reaction box with crop straw from the pay-off mouth along hollow rotating shaft, crop straw easily piles up together, is conical guide block through setting up one side for carry the crop straw in the reaction box in from the pivot, when conical guide block, crop straw is dispersed to the guide block both sides, makes the difficult fast combustion of crop straw, thereby has improved the energy supply effect of crop straw gasification burner.

Preferably, the bottom of the guide block is provided with a pneumatic rod; one end of the air pressure rod is fixedly connected to the bottom plate at the bottom of the furnace body, the other end of the air pressure rod is fixedly connected with the guide block, and the guide block is controlled by the air pressure rod to slide in the sliding groove of the sleeve. The during operation, by the crop straw of dispersion guide block both sides, no matter the crop straw is abundant burning, still smoldering, do not all can consume the crop straw that persists in the hollow rotating shaft when having the east and west to block, make crops too big in the energy supply in the twinkling of an eye, drive the guide block through the baroceptor and upwards slide, back in crop straw distributes the reaction box, the guide block seals the hollow rotating shaft, make the crop straw in the pivot not consumed, after the crop straw in the reaction box consumes totally, slide the guide block downwards, distribute the reaction box with crop straw again, make the volume of the crop straw in the reaction box certain, thereby the even effect that lasts the energy supply of crop straw gasification furnace has been improved.

Preferably, the bottom of the reaction box is provided with a sliding plate; one end of the sliding plate is fixedly connected with the side plate of the reaction box through a spring, the other end of the sliding plate is fixedly connected to the outer ring of the sleeve through a spring, a third hole is formed in the sliding plate, and the third hole and the second hole are staggered mutually. When the reaction box works, when the crop straws are combusted in the reaction box, the crop straws are prevented from falling off from the reaction box when not combusted through the staggered arrangement of the third hole and the second hole; meanwhile, the crop straws generate plant ash during combustion, the sliding plate slides relative to the bottom plate of the reaction box in the process of rotating along with the reaction box, the third hole is communicated with the second hole, the plant ash generated during the combustion of the crop straws falls off from the communicated holes to the bottom of the furnace body, and the plant ash is extracted from the second ash outlet through the exhaust fan and is discharged out of the furnace body.

Preferably, a filtering unit is arranged inside the furnace body; the number of the filter units is four, the filter units are located above the reaction units, the filter units are fixedly mounted on an outer ring of the rotating shaft, the filter units are circumferentially distributed around the rotating shaft, and the filter units are communicated with the first ash outlet. During operation, flue gas generated in the combustion of crop straws is dispersed to the upper part of the furnace body, and when the flue gas passes through the filtering unit, the filtering unit filters the flue gas, so that the flue gas conveyed out of the furnace body is pure, and the purity of the flue gas is improved.

Preferably, the filtering unit comprises a filtering box, a first plate, a second plate, a third plate and a filtering cover; the bottom of the filter box is provided with a first groove, a smoke inlet and a first channel; the first groove is communicated with the first ash outlet through a first passage, and water is collected in the first groove; the top of the filter box is provided with a fourth hole; the cross section of the filter cover is trapezoidal, the filter cover is obliquely and fixedly connected to two side walls of the filter box through a third plate, and the top of the filter cover is provided with a hole; the first plate and the second plate are respectively and fixedly connected to the side walls of the two sides of the filter box in an inclined manner; the first plate is provided with a fifth hole, and the second plate is provided with a sixth hole; the two sides of the second plate are respectively provided with a third plate and a first plate, the second plate is arranged above the first plate, and the lengths of the first plate, the second plate and the third plate are gradually reduced from top to bottom. During operation, the flue gas enters into the rose box through advancing the mouth, the flue gas loops through a board after getting into, No. two boards, the flue gas receives and blocks in No. three board departments, make the flue gas from a board, go back to disperse in the clearance between No. two boards and filter mantle, the flue gas contacts with the water of assembling in a groove, assemble the vegetation ash dust in the water absorption flue gas, the vegetation ash in a groove is taken out from the furnace body through a passageway through the air exhauster, the flue gas after the absorption carries out the secondary filter when the filter mantle, make the gas of carrying out the furnace body from No. four holes clean, thereby the purity of gas has been improved.

Preferably, the first plate and the second plate are both condensation plates. During operation, when the flue gas passes through the first plate and the second plate, the first plate and the second plate are condensation plates, so that moisture in the flue gas is liquefied, water falls back into the first groove, moisture in the flue gas is removed, and the purity of the fuel gas is improved.

The invention has the following beneficial effects:

1. according to the crop straw gasification furnace, the rotating shaft is driven to rotate anticlockwise, so that crop straws and air are fully combusted, when the air in the reaction box is reduced, the reaction box is driven to rotate clockwise, the baffle plate blocks the first hole on one side of the reaction box, so that the air cannot enter the reaction box, the crop straws are smoldered in the reaction box, fuel gas is generated, the crop straws can be continuously supplied for a long time, and the energy supply effect of the crop straw gasification furnace is improved.

2. According to the crop straw gasification furnace, the third hole and the second hole are arranged in a staggered mode, so that on one hand, crop straws are prevented from falling off from the reaction box when not burnt; on the other hand, when the crop straws are burnt, plant ash is generated, the third hole is communicated with the second hole when the sliding plate rotates along with the reaction box, and the plant ash generated when the crop straws are burnt falls off from the communicated holes to the bottom of the furnace body.

3. According to the crop straw gasification furnace, the crop straws can be dispersed into the reaction tank for combustion through the matching of the air pressure rod and the guide block, and the consumption of the crop straws in the hollow rotating shaft can be avoided, so that the uniform energy supply effect of the crop straw gasification furnace is improved.

4. According to the crop straw gasification furnace, the first plate, the second plate, the third plate and the filter cover are matched with each other, so that moisture in flue gas can be removed, plant ash and dust in the flue gas can be absorbed by collected water, and the purity of fuel gas is improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

FIG. 4 is a cross-sectional view of C-C of FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 1 at D;

FIG. 6 is an enlarged view of a portion of FIG. 3 at E;

in the figure: furnace body 1, air inlet 11, No. one ash hole 12, No. two ash holes 13, pivot 2, pay-off mouth 21, reaction unit 3, reaction box 31, baffle 32, No. one hole 33, No. two holes 34, sleeve 4, spout 41, guide block 42, atmospheric pressure pole 43, sliding plate 44, No. three hole 45, filter unit 5, rose box 51, No. one board 52, No. five holes 521, No. two boards 53, No. six holes 531, No. three board 54, filter housing 55, No. one groove 56, smoke inlet 57, No. one passageway 58, No. four holes 59.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the crop straw gasification furnace of the present invention comprises a furnace body 1, a rotating shaft 2; also comprises a reaction unit 3; the rotating shaft 2 is arranged in the furnace body 1, the rotating shaft 2 is a hollow shaft, the bottom end of the rotating shaft 2 is fixedly connected with the reaction unit 3, the top end of the rotating shaft 2 extends out of the furnace body 1 and is fixedly connected with the driving device, and a feeding opening 21 is formed in the outer ring of the rotating shaft 2 extending out of the furnace body 1; the number of the reaction units 3 is four, the reaction units 3 are fixedly connected to the outer ring of the rotating shaft 2, and the reaction units 3 are circumferentially distributed around the rotating shaft 2; the side wall of the furnace body 1 is provided with an air inlet 11, a first ash outlet 12 and a second ash outlet 13; the gas inlet 11 is communicated with the reaction unit 3; wherein the content of the first and second substances,

the reaction unit 3 includes a reaction tank 31 and a baffle 32; a first hole 33 is formed in the side wall of the reaction box 31, a second hole 34 is formed in the bottom of the reaction box 31, and a baffle plate 32 is fixedly connected to one side of the reaction box 31 through a spring; when the rotating shaft 2 rotates clockwise, the first hole 33 on one side is blocked by the baffle 32, and when the rotating shaft 2 rotates anticlockwise, the first hole 33 is not blocked by the baffle 32. During operation, send into the crop straw from pay-off mouth 21 to reaction box 31 in, get into a lot of air from air inlet 11 in the reaction box 31 at first, this moment, drive pivot 2 anticlockwise rotation through drive arrangement, baffle 32 does not block up a hole 33, make crop straw and air carry out abundant burning, treat that the air in the reaction box 31 diminishes, drive pivot 2 clockwise rotation through drive arrangement, corresponding reaction box 31 also clockwise rotates, reaction box 31 is in the rotation, baffle 32 blocks up a hole 33 of reaction box 31 one side, make the air can not enter into reaction box 31, crop straw smolders in reaction box 31 this moment, produce the long-time continuous energy supply of gas messenger crop straw, thereby the energy supply effect of crop straw gasification burner has been improved.

As an embodiment of the present invention, the bottom of the reaction box 31 is provided with a sleeve 4; a chute 41 is arranged in the sleeve 4, one end of the sleeve 4 is positioned in the reaction box 31, and the other end of the sleeve 4 is positioned outside the reaction box 31; a guide block 42 is arranged in the sliding groove 41, and one side of the guide block 42 close to the rotating shaft 2 is conical. During operation, when sending into the reaction box 31 along hollow rotating shaft 2 with crop straw from pay-off mouth 21, crop straw easily piles up together, is conical guide block 42 through setting up one side for carry the crop straw in the reaction box 31 from pivot 2, when conical guide block 42, crop straw is dispersed to guide block 42 both sides, makes the difficult fast combustion of crop straw, thereby has improved the energy supply effect of crop straw gasification burner.

As an embodiment of the present invention, the bottom of the guide block 42 is provided with a pneumatic rod 43; one end of the air pressure rod 43 is fixedly connected to the bottom plate at the bottom of the furnace body 1, the other end of the air pressure rod 43 is fixedly connected with the guide block 42, and the guide block 42 is controlled by the air pressure rod 43 to slide in the sliding groove 41 of the sleeve 4. The during operation, by the crop straw of dispersing guide block 42 both sides, no matter the crop straw is the intensive combustion, still smoldering, do not have the east west to stop the time and all can consume the crop straw that persists in hollow rotating shaft 2, make crops too big in energy supply in the twinkling of an eye, drive guide block 42 through gas strut 43 and upwards slide, after in crop straw distributes reaction box 31, guide block 42 seals hollow rotating shaft 2, make the crop straw in pivot 2 not consumed, after the crop straw in reaction box 31 consumes totally, slide guide block 42 downwards, distribute crop straw to reaction box 31 again, make the amount of the crop straw in reaction box 31 certain, thereby the even effect of lasting energy supply of crop straw gasification burner has been improved.

As an embodiment of the present invention, the bottom of the reaction box 31 is provided with a sliding plate 44; one end of the sliding plate 44 is fixedly connected with the side plate of the reaction box 31 through a spring, the other end of the sliding plate 44 is fixedly connected with the outer ring of the sleeve 4 through a spring, a third hole 45 is formed in the sliding plate 44, and the third hole 45 and the second hole 34 are staggered. When the device works, when the crop straws are combusted in the reaction box 31, the crop straws are prevented from falling off from the reaction box 31 when not combusted through the staggered arrangement of the third holes 45 and the second holes 34; meanwhile, the crop straws generate plant ash during combustion, the sliding plate 44 slides relative to the bottom plate of the reaction box 31 in the process that the sliding plate 44 rotates along with the reaction box 31, the third hole 45 is communicated with the second hole 34, the plant ash generated during the combustion of the crop straws falls off from the communicated holes to the bottom of the furnace body 1, and the plant ash is extracted from the second ash outlet 13 through the exhaust fan and is discharged out of the furnace body 1.

As an embodiment of the present invention, a filtering unit 5 is provided inside the furnace body 1; the number of the filter units 5 is four, the filter units 5 are located above the reaction unit 3, the filter units 5 are fixedly installed on the outer ring of the rotating shaft 2, the filter units 5 are circumferentially distributed around the rotating shaft 2, and the filter units 5 are communicated with the first ash outlet 12. During operation, the flue gas that produces in the burning of crop straw disperses to furnace body 1 upper portion, and when the flue gas passed through filter unit 5, filter unit 5 filtered the flue gas for the gas that carries out furnace body 1 is pure, thereby has improved the purity of gas.

As an embodiment of the present invention, the filter unit 5 includes a filter box 51, a first number plate 52, a second number plate 53, a third number plate 54, and a filter cover 55; the bottom of the filter box 51 is provided with a first groove 56, a smoke inlet 57 and a first channel 58; the first groove 56 is communicated with the first ash outlet 12 through a first passage 58, and water is collected in the first groove 56; a fourth hole 59 is formed in the top of the filter box; the cross section of the filter cover 55 is trapezoidal, the filter cover 55 is fixedly connected to two side walls of the filter box 51 in an inclined mode through a third plate 54, and holes are formed in the top of the filter cover 55; the first plate 52 and the second plate 53 are respectively and fixedly connected to the side walls of the two sides of the filter box 51 in an inclined manner; the first plate 52 is provided with a fifth hole 521, and the second plate 53 is provided with a sixth hole 531; the two sides of the second plate 53 are respectively provided with a third plate 54 and a first plate 52, the second plate 53 is arranged above the first plate 52, and the lengths of the first plate 52, the second plate 53 and the third plate 54 are gradually reduced from top to bottom. During operation, the flue gas enters into the rose box 51 through the smoke inlet 57, the flue gas loops through a board 52, No. two boards 53 after entering, the flue gas is stopped at No. three board 54 for the flue gas is from a board 52, No. two boards 53 and the clearance between filter mantle 55 back dispersion, the flue gas contacts with the water that assembles in a groove 56, assemble the vegetation ash dust in the water absorption flue gas, the vegetation ash in a groove 56 is drawn away from furnace body 1 through a passageway 58 through the air exhauster from an ash outlet 12, the flue gas after the absorption carries out secondary filtration when passing through filter mantle 55, make the pure gas that is carried out furnace body 1 from No. four holes 59, thereby the purity of gas has been improved.

As an embodiment of the present invention, the first plate 52 and the second plate 53 are both condensation plates. During operation, when the flue gas passes through the first plate 52 and the second plate 53, because the first plate 52 and the second plate 53 are condensation plates, moisture in the flue gas is liquefied, and water falls back to the first groove 56, so that moisture in the flue gas is removed, and the purity of the fuel gas is improved.

When the device works, crop straws are fed into the hollow rotating shaft 2 from the feeding port 21, when the crop straws pass through the guide block 42, the crop straws are distributed into the reaction box 31, the guide block 42 is driven by the air pressure rod 43 to slide upwards, and the hollow rotating shaft 2 is blocked by the guide block 42; at first, a lot of air enters the reaction box 31 from the air inlet 11, the rotating shaft 2 is driven to rotate anticlockwise through the driving device, so that the crop straws and the air are sufficiently combusted, when the air in the reaction box 31 is reduced, the reaction box 31 is driven to rotate clockwise through the driving device, the first hole 33 on one side of the reaction box 31 is blocked by the baffle 32, so that the air cannot enter the reaction box 31, the crop straws are smoldered in the reaction box 31, so that the crop straws can continuously supply energy for a long time, and the energy supply effect of the crop straw gasification furnace is improved; plant ash generated during combustion falls to the bottom of the furnace body 1 from the communicated second hole 34 and third hole 45, and the plant ash is extracted from the furnace body 1 from the second ash outlet 13 through an exhaust fan; the flue gas that produces during the burning enters into rose box 51 through advancing smoke inlet 57, the flue gas loops through a board 52, No. two board 53, block back dispersion when No. three board 54, the flue gas makes the moisture liquefaction in the flue gas when a board 52, No. two board 53, water falls back to No. one groove 56, thereby the moisture in the flue gas has been clear away, and the flue gas through the water that assembles in a groove 56, assemble the water and absorbed the plant ash dust in the flue gas, the plant ash dust is drawn away from furnace body 1 from ash outlet 12 through a passageway 58 through the air exhauster, the gas that passes through from filter housing 55 passes through the secondary filtration of filter housing 55, make the gas that carries out furnace body 1 from No. four holes 59 pure purity degree of gas, thereby improved the gas.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A crop straw gasification furnace, which comprises a furnace body (1) and a rotating shaft (2); the method is characterized in that: also comprises a reaction unit (3); the rotating shaft (2) is arranged inside the furnace body (1), the rotating shaft (2) is a hollow shaft, the bottom end of the rotating shaft (2) is fixedly connected with the reaction unit (3), the top end of the rotating shaft (2) extends out of the furnace body (1) to be fixedly connected with the driving device, and a feeding opening (21) is formed in the outer ring of the rotating shaft (2) extending out of the furnace body (1); the number of the reaction units (3) is four, the reaction units (3) are fixedly connected to the outer ring of the rotating shaft (2), and the reaction units (3) are circumferentially distributed around the rotating shaft (2); the side wall of the furnace body (1) is provided with an air inlet (11), a first ash outlet (12) and a second ash outlet (13); the air inlet (11) is communicated with the reaction unit (3); wherein the reaction unit (3) comprises a reaction tank (31) and a baffle plate (32); a first hole (33) is formed in the side wall of the reaction box (31), a second hole (34) is formed in the bottom of the reaction box (31), and a baffle plate (32) is fixedly connected to one side of the reaction box (31) through a spring;

the bottom of the reaction box (31) is provided with a sleeve (4); a sliding groove (41) is formed in the sleeve (4), one end of the sleeve (4) is positioned in the reaction box (31), and the other end of the sleeve (4) is positioned outside the reaction box (31); a guide block (42) is arranged in the sliding groove (41), and one side, close to the rotating shaft (2), of the guide block (42) is conical;

the bottom of the guide block (42) is provided with an air pressure rod (43); one end of the air pressure rod (43) is fixedly connected to a bottom plate at the bottom of the furnace body (1), the other end of the air pressure rod (43) is fixedly connected with the guide block (42), and the guide block (42) is controlled by the air pressure rod (43) to slide in the sliding groove (41) of the sleeve (4);

the bottom of the reaction box (31) is provided with a sliding plate (44); one end of the sliding plate (44) is fixedly connected with a side plate of the reaction box (31) through a spring, the other end of the sliding plate (44) is fixedly connected to an outer ring of the sleeve (4) through a spring, a third hole (45) is formed in the sliding plate (44), and the third hole (45) and the second hole (34) are staggered with each other;

a filtering unit (5) is arranged in the furnace body (1); the number of the filter units (5) is four, the filter units (5) are positioned above the reaction unit (3), the filter units (5) are fixedly arranged on the outer ring of the rotating shaft (2), the filter units (5) are circumferentially distributed around the rotating shaft (2), and the filter units (5) are communicated with the first ash outlet (12);

the filtering unit (5) comprises a filtering box (51), a first plate (52), a second plate (53), a third plate (54) and a filtering cover (55); the bottom of the filter box (51) is provided with a first groove (56), a smoke inlet (57) and a first channel (58); the first groove (56) is communicated with the first ash outlet (12) through a first passage (58), and water collection is arranged in the first groove (56); the top of the filter box (51) is provided with a fourth hole (59); the cross section of the filter cover (55) is trapezoidal, the filter cover (55) is obliquely and fixedly connected to two side walls of the filter box (51) through a third plate (54), and a hole is formed in the top of the filter cover (55); the first plate (52) and the second plate (53) are respectively and fixedly connected on the side walls of the two sides of the filter box (51) in an inclined manner; the first plate (52) is provided with a fifth hole (521), the second plate (53) is provided with a sixth hole (531), the two sides of the second plate (53) are respectively provided with a third plate (54) and a first plate (52), the second plate (53) is arranged above the first plate (52), and the lengths of the first plate (52), the second plate (53) and the third plate (54) are gradually reduced from top to bottom;

the first plate (52) and the second plate (53) are both condensation plates.